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Results 21 - 30 of 40
5/1/2004 - Conference papersDiscusses implementation of a real-time neural network which can discriminate mine fires from nuisance diesel emissions as part of an atmospheric mine monitoring system in NIOSH's Safety Research Coal Mine.
5/1/2004 - Conference papersThis study describes how response times of machine-mounted methane monitors were measured by placing the methane sensor heads in a specially designed box where they were exposed to an atmosphere containing a constant concentration of methane.
10/1/2003 - Conference papersReport on a series of performance tests conducted on the IYONI II methanometer. Testing methods included use of a calibration fixture, an environmental test box and a full scale test gallery.
9/1/2002 - Technology NewsIn an effort to determine the effectiveness of multiple types of fire sensors for early and reliable mine fire detection, NIOSH has evaluated multiple sensors for early mine fire detection and nuisance signal discrimination.
Evaluating Performance Characteristics of Machine-Mounted Methane Monitors by Measuring Response Time6/1/2002 - Conference papersThis publication examines a procedure for measuring the response time of machine-mounted methane monitors
2/1/2002 - Conference papersReport on a NIOSH study to identify factors that may contribute to nitrogen oxides (NOx) production associated with non-ideal detonation of blasting agents.
6/1/2001 - Conference papersThis publication develops criteria for selecting the best machine locations for monitoring methane and gives recommendations for revising methane action levels for alternative sampling locations.
5/1/2001 - Conference papersThis paper covers the development of NIOSH's modified direct method to measure the gas content of coal samples.
4/1/2000 - Conference papersReport on the application of a neural-network program using mine sensor data to classify the type of fire.
5/1/1997 - Reports of InvestigationsAs the use of deep-cut mining increases, there is expected to be a greater demand for methane measurement devices capable of scanning working faces at depths in excess of 10 m to alert mine personnel of hazardous concentrations of methane and to satisfy...